The "historical" data appears to be available via https://dwr.state.co.us/Rest/GET/Help/Api/GET-api-v2-surfacewater-surfacewatertsday I believe this data was previously available via TSTool. What is the plan for access to this data? The TSTool command ReadColoradoHydroBaseRest appears to only access the https://dwr.state.co.us/Rest/GET/Help/Api/GET-api-v2-telemetrystations-telemetrytimeseriesday endpoint.
Thanks for indulging my ignorance!